US 4,623,082 A · Electronic stapler

Abstract

An electronic stapler suitable to accommodate staples in the form of staple sheets, in which a predetermined number of unformed staple elements are connected adjacent to one another, and a number of these staple sheets are stacked and accommodated in a generally rectangular cartridge, which is placed above the staple sheet feed path of the stapler. The stapler includes a former-driver unit and a power source for driving the former and the driver is provided by a small-sized electric motor which requires no instantaneous high consumption of electric current and generates no impact operation sound and noise, and the clinching operation of one cycle is effected by one controlled rotation of a rotating drive shaft having a speed reduced from the rotational output of the electric motor. The staple sheets are fed by providing a staple sheet feed mechanism in which an endless belt for conveying the staple sheets, including the portion for positioning the cartridge, is arranged above the staple sheet feed path and in which magnetic means for generating a suitable frictional force is interposed between the face of that endless belt and the staple sheets.

Claims10

Dependent claims

A power-driven stapler adapted to use staple sheets comprising:

a cartridge accommodating portion for accommodating a staple cartridge in which are stacked multiple layers of staple sheets, each of which is prepared by connecting a multiplicity of unformed non-U-shaped staple elements by means of an adhesive;
feed path defining means formed in front of said accommodating portion for introducing staple sheets from a staple cartridge accommodated in said accommodating portion from the rear end thereof and for guiding the same to the front end thereof;
feed means disposed to extend from said accommodating portion to said feed path defining means for consecutively and continuously feeding out the staple sheets from the staple cartridge accommodated in said accommodating portion onto said feed path defining means;
forming means arranged in front of said feed path defining means for consecutively forming the staple elements of the staple sheets into staples having a U-shape;
staple driver means for driving consecutively U-shaped staples formed by said forming means;
clinching means for bending the leg portions of the driven staples;
electric motor drive means for driving at least said feed means, said forming means and said staple driver means;
and control means for controlling the drive of said electric motor drive means in a single cycle of the clinching step.

5 more elements

A layered staple sheet cartridge comprising:

staple sheets formed of a predetermined number of staple elements of generally straight configuration cut to have a predetermined length, adhered together in series with and adjacent to one another;
a generally square accommodating portion accommodating said staple sheets in a stacked form;
supporting members formed to extend from the lower ends of the two opposed side walls of said accommodating portion and made engageable with the two side edges of the lowermost one of said staple sheets for supporting the staple sheets accommodated therein;
a staple sheet exit formed in the lower end of the front wall of said accommodating portion and having a limited size for letting off the lowermost one of said staple sheets forwardly;
an opening formed in the lower face of said accommodating portion for exposing the lower face of the staple sheets accommodated in said accommodating portion to the outside along the feeding direction;
and a staple material sheet push member for pushing the staple material sheets accommodated in said accommodating portion toward said lower end.

3 more elements

Dependencies are inferred from the claim text.

Electronic stapler

Life of this patent

Electronic stapler

Life of this patent

Abstract

Claims10